Vesuvianite
Vesuvianite is a silicate mineral prized by collectors for its exceptional color range, with known Chinese sources.
About Vesuvianite
Vesuvianite is classified as a silicate mineral in the vesuvianite group and has the chemical formula Ca19(Al,Mg,Fe)13Si18O68(OH,F)10. It crystallizes in the tetragonal system and is one of the most visually varied minerals in the collector market.
Identification & care
Specimens usually show tetragonal prismatic crystals; square to 8-sided cross-section; also massive. Its color range is broad, including brown, greenish-yellow, dark green (cr-bearing — 'californite'), blue, yellow, and white. The luster is vitreous, resinous, the streak is white, and specimens range from transparent (gem) to opaque (massive). The cleavage is poor {110} and {001}. The fracture is subconchoidal to uneven, which aids identification.
Collector context
Collector notes
Vesuvianite holds a steady place in systematic mineral collections. Vesuvianite is widely represented across Chinese provinces, including Fujian, Gansu, Anhui, Guangdong.